An apparatus (10) for detecting an occupancy of an equipment (12) by a person (14). A memory stores a status of the equipment as either occupied or unoccupied, and a predetermined acceleration limit value. An accelerometer unit communicates with the memory, and measures acceleration values of the equipment at discrete time intervals. The accelerometer unit compares each acceleration value to an acceleration limit value. If a consecutive number N of the acceleration values is greater than or equal to the acceleration limit value, the accelerometer unit generates a movement signal. A processor operates between an active mode when it receives the movement signal from the accelerometer unit, and an inactive mode. The processor in the active mode emits an occupied signal if the status of the equipment is unoccupied. A power source supplies electrical power to the accelerometer unit and to the processor.